[Amps] Astron Power Supply replies

[Gary Smith]

Follow-up,

I ordered a set of 10 Motorola MC1723CP which cross reference to the 
stock LM723CN the Astron uses, on Ebay, for all of $5.25 shipped from 
this seller: 
http://tinyurl.com/ozwdjhr
This was indeed the resolution to my PS issue and it's running 
perfectly now. No telling why the regulator went south but thanks for 
the replies!

73,

Gary
KA1J

> Gentlemen,
> 
> Thank you all so much for the replies regarding upgrades, suggestions 
> and green wire dealings with my two Astron power supplies. The only 
> reason I asked that here was the mention of the green neutral being 
> left in a floating condition on at least some of the Astron PS. I 
> need to repair the one that is Kaput and am looking around for a 
> LM723 around here as the links mention that to be a common culprit, 
> I've used them before in several projects and probably have several 
> gathering dust in an old Radio Shack package. If not, I see them 
> listed quite inexpensively on ebay and will pick up several for 
> future issues I may encounter.
> 
> The four 2N3771 transistors really do run hot on the VS-35M, can't 
> say I touched them on the RS-35M but surely they are the same, the 
> circuit between the two PS are very similar. I'm assuming I can use 
> any off the shelf 2N3771 & the .05 5W wirewounds will balance them 
> fairly. On the PS I made some years back I used 3055's and I have 
> several of them unused, would these be more rugged or should I stick 
> with the 3771 as it comes with?
> 
> Mention was made of Arctic Silver; I have some Arctic Silver 5 & some 
> of their Ceramique which I too used in overclocking computers. I can 
> certainly remove & replace the heat sink compound with this, not a 
> big job and using it did lower my core temps on the computer 
> processor.
> 
> I really appreciate the links and help. 
> 
> Thanks & 73,
> 
> Gary
> KA1J
> 
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